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Fizurg

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Posts posted by Fizurg

    Will an R32 GTR with -9 turbos need a tune?

    in RB Series - R31, R32, R33, R34 (1986-2002)

    Posted

    On 09/05/2022 at 4:57 PM, joshuaho96 said:

    I would just make sure the parts are good. Hard part is making sure the turbos are rebuilt properly as well, those things spin at some ridiculous RPM so there is very little tolerance for any mistakes. I would probably ask Hypergear to see if they could do it. Likely not the cheapest option but I would value someone experienced that can do the job right over having to pull the turbos multiple times. I'd be suspect of most ebay rebuild kits, mostly because it's so hard to know the exact provenance of those parts.

    There are some people who know what they're talking about, I'm just some random kid that doesn't really know what they're doing. So don't worry too much about it, you're in good company.

     

    yeah that is my next concern. im based in NZ and im not really sure who to use. there are plenty of companies that rebuild turbos but how to know which one will be good could be tough

    Will an R32 GTR with -9 turbos need a tune?

    in RB Series - R31, R32, R33, R34 (1986-2002)

    Posted

     

    On 09/05/2022 at 12:47 PM, Duncan said:

    yes, standard turbos rebuilt with steel wheels in the same size and same/similar boost will be the cheapest way to get going again....no tune issues that way. Plus, rebuild is cheaper than all new turbs as no other fittings/exhaust/etc changes are required

    cool as. this option I guess makes the most sense. it gets my car back on the road and although its not ideal as far as performance goes, there are worse things than having a factory original R32 GTR. its also by far the easiest sell to the Mrs which makes life easier.

    Cheers for all the help ive been given so far. ive been a member of many car forums over the years and they have always been by far the best source of information ive ever found. this one in particular is active, knowledgeable and friendly, so very much appreciated by me. im sure i will have more stupid questions going forward.

    Will an R32 GTR with -9 turbos need a tune?

    in RB Series - R31, R32, R33, R34 (1986-2002)

    Posted · Edited by Fizurg

    On 6/5/2022 at 5:25 PM, Dose Pipe Sutututu said:

    Another option is, get the turbos on, then get a Nistune ECU get it tuned OR get a Haltech Platinum Pro (not too expensive) unplug the AFMs/MAFs and feed a vacuum hose to the ECU and just use the base map (has crap all timing in it).

    Would this really work? Also why won’t the MAFs work with an aftermarket ECU?

    Will an R32 GTR with -9 turbos need a tune?

    in RB Series - R31, R32, R33, R34 (1986-2002)

    Posted

    On 06/05/2022 at 4:22 PM, Murray_Calavera said:

    You could install the -9 turbos, turn the boost down and put it on the dyno to check the mixtures to ensure everything is safe. 

    The haltech would be hidden behind the passenger side kick panel. If whoever is inspecting the car pulls that panel off, they would spot the aftermarket ecu. 

    Awesome, so no issues there then. 

    I had planned to build the car with a lot more power and build the type of car i dreamed of as a teenager. but since buying it my partner has gotten pregnant and so spending money on toys has gotten slightly harder to justify. no i plan to ust get it back on the road and keep it as factory as possible, with only a few bolt ons. 

    Single vs twin turbo.

    in RB Series - R31, R32, R33, R34 (1986-2002)

    Posted

    On 25/08/2021 at 7:53 PM, GTSBoy said:

    Kelford L182-A for the most street option.

    Kelford L182-B for a less street (will be a bit lopey) street option

    Neither of those require lifter bore clearancing work.

    Kelford 182-B for the best street option.

    Kelford 182-C for the less street best street option.

    But both of the above will require lifter bore clearancing.

     

    Lift is better than duration for a street car. The bore clearancing is worth it. But of course, the head has to come apart.

    The head will be rebuilt so if there's work like that then it should be easy enough to get it done. i forgot to mention in my last post that driveabilty a street manners including fuel economy will be more important than absolute performance and things like wanting a lumpy idle. 

    R32 GTR V-spec based in NZ

    in Newbie Introductions

    Posted

    On 24/08/2021 at 10:19 AM, Lithium said:

    Nice choice!  The best responding RB26 I've ever been in was a stock bottom end one running an EFR8374 - though it DID have V-Cam as well.  Head and shoulders above any other RB26 I've experienced in terms of torque/response, and was also making ~460awkw.   Great option for having a nice road setup with plenty of headroom.

    Who is doing the build?

    I saw some really good reviews on set ups like that. Hopefully the lack of vcam won’t affect it too much. 
    mum almost through reading the EFR v2 thread. There is a lot of info in there. The internal vs external gate is interesting. Internal seems easier and cheaper and some of the people seem to swear by them, but the tuners I’m using think external is better so that’s what I will go for. I’m trying to get my head around the twin or single wastegate for the twin scroll manifold. I can see how in theory twins mean you retain a true twin scroll set up but as far as I can see, as soon as the gate opens then the twin scroll disappears and isn’t needed anyway. The tuners I’m using have said to use one wastegate. 
     

    The engine, fitting and custom fabrication is being done by Hi-power and the tuning will be done by NDT developments. Both in Auckland. They were companies recommended to me. 

    • Like 1

    Single vs twin turbo.

    in RB Series - R31, R32, R33, R34 (1986-2002)

    Posted

    On 18/08/2021 at 10:45 AM, joshuaho96 said:

    To me the interesting test would be something like EFR7064 single vs whatever flavor of the day bolt-on twin turbo with comparable power output, assuming you added whatever you needed to try and fix some of the more blatant issues like the really awful twin turbo merge pipe, etc. I have a feeling it would be the EFR7064 but how far off with the stock-ish twins be?

    I could be wrong with the turbo number but the tuner did mention going down to a 7xxx turbo which would beat -7 twins in every way. But he said it’s always better to go one size up as most people end up wishing they had. 

    Single vs twin turbo.

    in RB Series - R31, R32, R33, R34 (1986-2002)

    Posted

    On 17/08/2021 at 10:19 PM, Kinkstaah said:

    The real difference isn't "Single vs Twin" its the fact that for any kind of sensible power figure, Single turbo development has kept on going instead of the direct bolt on twins in the 90's.

    You could use two of these new, modern turbos, for approximately the same result as a single of the same total size of two modern ones combined, but as that is more expensive, and more complicated, and that generally turbos get more efficient as they get larger..... people don't choose to do this.

    Yeah, if I stayed with twins it would have been to save money and keep the engine bay looking stock. The EFR twin set ups look really cool but out of budget and don’t seem to make sense compared to running one bigger one. Pretty cool for show cars and things like that though. 

    Single vs twin turbo.

    in RB Series - R31, R32, R33, R34 (1986-2002)

    Posted

    On 17/08/2021 at 8:27 PM, UWISSH! said:

    If you’re going to be spending that much on a turbo you may aswell just do it properly and go the full twin external gate option.

    you would hate to get all the way to the end and always have that little bit or regret/ wonder what if, if I had gone the other option. Just more cost effective to do it properly in one hit

    Yeah, that makes sure. I think part of me was hoping people on here would say not to worry about it. That the 10 extra kw aren’t worth the effort. Sadly it seems that’s not the case haha. 

    Single vs twin turbo.

    in RB Series - R31, R32, R33, R34 (1986-2002)

    Posted

    After talking to the guy who’s going to tune it and the guy doing the work I’ve been convinced to go for a 8374. It’s way more power than I expected to get but reading up it seems like a pretty exciting option. 
    I’m halfway through the 130 odd pages in the EFR thread and am amazed at the results. There seems to be a feeling that the IWG options aren’t as good as the EWG ones. But I’m guessing there would be some cost savings with the IWG especially vs a twin external wastegate set up. Does anyone have any experience with the 8374 IWG vs EWG. Is there cost savings? Is there performance sacrifices? Is a twin wastegate setup needed for a twin scroll 8374?

    R32 GTR V-spec based in NZ

    in Newbie Introductions

    Posted

    On 16/08/2021 at 1:36 PM, Predator1 said:

    What he said ^. Do what you want. Mine just went downhil very very quickly, its in my profile if you want to read through.

    If I could do it all over again, I'd stick with a built 26 with around 4-450awkw.

    After speaking with the guy doing the work and the guy tuning it. I’ve decided to go with a 8374. It’s way more than what I thought I would want but it seems a really good option and I can always turn down the boost I guess. 

    • Like 1

    R32 GTR V-spec based in NZ

    in Newbie Introductions

    Posted

    On 12/08/2021 at 10:56 PM, Matty George said:

    Beautiful ride bro. I have a 93 model and did the same thing with -9’s. At 490 hp with cams, gears on a haltech pnp. Enjoy bro performance is amazing from RB26’s

    That’s pretty much the exact combo I plan to do. 

    Single vs twin turbo.

    in RB Series - R31, R32, R33, R34 (1986-2002)

    Posted

    Cheers guys. I think you can see the dilemma. For performance, a single is the obvious choice. But I feel like the twins should be enough to make the car more than enough fun for me and if I can keep it looking original there is an appeal to me for that. 
    with the twins I can leave the engine bay looking stock and it would almost be a bit of a sleeper. Not that a GTR is a very good base for a sleeper. 

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